Clutch



l.A MACHO.

CLUTCH. APPLlcATloN FlLED rl-:.s,1917.

.Patented Jan. L WZL 3 SHEETS-SHEET 1.

mlm-w 31%@ Mal 5mg-iig J. MACHO.

CLUTCH.

APPLICATION FILED FEB. s, 1917.

1,364,892. Panama Jan. 4,1921. I 3 SHEETS-SHEET 2.

n L'MACHO.

CLUTCH.- APPLICATION FILED FEB. 8,1917.

- Patented Jan. 4, i921..

3 SHEETS-SHEET 3.

JOHN MACHO, or NEW Yoan, N. Y.

, CLUTCH.

Specication of Letters Patent.

Application led February 8, 191'?. Serial No. 147,334.

To all whom it may concern.'

Be it known that I, JOHN MACHO, a citizen of the United States, residing at 373 East 167th street, Bronx, New York, New York, have invented new and useful Im provements in Clutches, of which the following i's a specification.

My invention relates to clutches.

The object of my invention is to provide a simple means for transmitting the power from a driving shaft to a driven shaft with an actuating means which ma be easily applied and easily released. y invention contemplates the use of a fluid pressure.

For automobile uses, an object is to prof vide a clutch operated by oil, under pressure, and so arranged that the oil may be put under pressure from the same source as is used for the oil feed for the engine,-in common practice, a pump actuated by the i usual automobile engine.

A further object 1s to provide a simple adjusting means for varying the pressure ap lied to the clutch.

y invention consists of the construction, combination and arrangement of parts, as herein illustrated, vdescribed and claimed.

ln the accompanying drawings, forming part hereof, I have illustrated a form of embodiment of my invention, in which drawings similar reference characters designate corresponding parts, and in which:

Figure 1 is a Side elevation;

Fig. 2 is av horizontal section taken through the working parts, one-half of the casing being removed and the control valve lbeing omitted;

Fig. 3 is a diagrammatic plan view showing the arrangement of the connection from the oil tank, and showing in section a cutout valve;

Fig. 4 is a vertical section taken approximately along the line 1 -4 of Fig. 1, looking in the direction indicated by the arrow;

Fig. 5 is a fragmentary detail inrhorizontal section of a form of pump used for prducing pressure on the operating fluid; an

Fig. 6 is a fragmentary detail in vertical section of an oil feed gage and return to oil tank.

' Referring to the drawings, 1 designates a fiy wheel securedlfu on a driving shaft 27 driven by any suita le source of power,

which commonly in automobile practice is a gasolene engine.

ratentea'aan. 4., 192i.t

Disposed around the end of the driving shaft 2 is the upper half 3 and the lower half 4: of a casing, the adjacent edges of the halves of the casing being secured together by bolts 5, and the forward end of the cas# ing abutting channel iron 6, suitably secured to the framework of the automobile to which the apparatus is applied.

The'rear ends of the halves 3 and 4 of the casingI engage the forward end of a pressure cylinder 7 and are supported thereby. The rear end of the pressure cylinder 7 is supported upon channel iron 8, which extends from one side to the other of the part tol which the invention is applied, and is secured to the channel iron 8 by means -of bolts (one of which-is shown) having disk 12 is a friction, wear-resisting plate 13, I

formed of a material such as the common form of brake lining, removably held in position as by means 0f rivets 14.

Disposed on thev hub 1l, adjacent ward face, is a grooved thrustplate 15, and disposed around the round portion of the driving shaft 2, 6 and the thrust plate`15, is a plurality of grooved thrust plates 16. Balls 17 are disposed between the thrust plates so' as to re'- duce the friction of the moving parts. the purpose of retaining the hub`11 on the tapered portion 10 of the driving shaft 2, a nut 18 is screwthreaded on the rear end of the portion 10 of the shaft 2. The round portion 19 is reduced in size as compared to the main 'body portion of the shaft 2.

A sleeve 20 is disposed. on the portion 19 of the shaft 2 and frictionally held in a recess 21 formed in the forward end of the driven shaft 22, on'the forward end of which is disposed a disk 23, arranged to abut the wear-plate 13 on the driving disk 12. The

its for# between the channel iron For disk 23 is secured by means of bolts 24 workflanges 25 on the disk 23 and the lforward Grooved thrustlates 26 are disposed on the forward end o the driven shaft 22, and suitable friction reducing balls 27 are dis# posed between the thrust-plates. l

A piston 28 is slidably disposed in the pressure cylinder 7 and provided with sult-l able packingr'ings 29 and also provided on its forward face with a recess 30 to receive the enlarged end of the driven shaft 22. A rearwardly projecting hub 31 of the piston 28 works through a bearing 32 formed in the rear wall of the pressure cylinder 7, and suitable packing rings 33 are inserted between the adjacent surfaces of the hub 31 and opening of bearing 32 in the pressure cylinder '7.

A flanged ring 34 is screw-threaded into' thel rear end of the bearing 32 and forms a stop or limit to the movement of the piston 28, toward the right hand of Flg. 2 or tov ward the rear end of a motorcar to which the device is applied.

An inlet pipe 35 enters 'one side of the pressure cylinder 7 and is connected to a pump 36, the details of the construction of which are best shown in Fig. 5. This construction'embodies a plurality of pistons 37,

operated by cams 38 on a cam shaft 39operated by the usual form of engine used in automobile practice. The piston to the leftA acts as the outlet valve; the one to the right is the piston which forces the oil. An inlet pipe 40 to the pump has one end connected with the oil tank 41, which may be of ordinary construction.

The pressure cylinder 7 is provided at the top with a port 42 (Fig. 4), to which is connected one end of a pipe 43, the opposite` end of which is connected to the casing 44 of an oil feed gage, which gage is connected in turn to the oil tank 41 by means of a short pipe 47, yas best shown in Figs. 3 and 6. The oil gage 44 is provided with a common form of means for control of flow of the oil, as the screw-threaded members pipes 46.

' By means of a two-way valve 49 (Fig. 3), disposed in the pipe 35, which leads from the pump 36 to the clutch and also to the oil'gage and oil tank, the pressure may be cut out from the clutch and worked through the oil gage and back to the oil tank without operating the clutch. The two-way valve 49 is disposed in a suitable form of casing 50 on the pipe 35, andthe valve casing is connected to the oil gage by means of a short length of pipe 51.

A port 52 is formed in the topof the pressure cylinder 7 and terminates iin a sion of the spring 55 may-be varied. By

means of this construction, a variation of pressure behind the piston 28 may be 0btained, and when an excess of pressure over that desired is obtained, the tension of the vspring 55 will be overcome and such excess pressure will passout of theI cylinder 7 through the port 52 and through the pipe 43 and then to the oil gageand back to the oil tank 41'.

A rod 58 is disposed through the port-42 and is-provded with a cutaway portion 59 (see Fig. 1) and has its movement in one direction limited by means of a nut 6() disposed on its outer end working against the terminating in a 'pedal plate 66 is securedv on the rock shaft 64, so thatthe Irod 58, forming a slide valve, may be moved to release the pressure in the cylinder 7 ,through the port 42 andback to the oil tank, through the pipe 43.

An arm .67, forming part of the pedal arm 65, has secured to 1t one end of the spring 68, the opposite end of which spring is secured to the forward channel iron6, so that .the'rock shaft is normally maintained in one position but may be` rocked to another position by movement of the arm` 65.

The arm 67 is provided with a projecting lug 70, 'working in a bifurcation 71 of an arm 72, pivoted as at 73 to an arm 74, secured on a rockl shaft 75, rockably supported in bearings 75a on the rearchannel iron 8. When the rock shaft 64 is moved, through the medium of the lug 70, working in the bifurcation 71, the arm 74 is rocked, carrying with it .the rock shaft 75. 'Arms 7 6 secured on the rockv shaft 75 carrying shoes 77 (as best shown in Fi 4), which shoes 77 bear upon a iiange 78 Figs. 1 and 2) secured on the driven shaft 22. The pressure of the shoes 77 against the lflange 78 causes .the driven disk 23 to be withdrawn from (contact with thel disk-l2 and at the same time stops'the rotation of the driven disk 23 and the shaft 22.

For the purpose of limiting the movement of the arm 74 toward the forward end of the device and for adjustin the movement thereof, a boss 79 (Fig. l) forward face of the arm 74 and provided with a screw-threaded body 80 adapted to abut the rear edge of the channel iron 8 secured on the car. A nut 81 locks the screw- .is formed on threaded body 80 to the arm 74, providing ranged to keep the brake shoes 77 away from the flange 78 when the clutch is engaged. When the pressure is removed by operation of the pedal 66, the lever 74 is 84 may be arranged on the halves 3 and 4 of the casing surrounding the clutch.

Inthe operation of the device, a flow of oil from the tank 41 is produced by means of any suitable form of pump 36, operated in any way from the ordinary form of engine used in automobile practice. 'The same pump which produces thispressure is utilized in applying lubricant to the engine in the usual way. j

-With the cut-out valve 49 in the position "shown in Fig. 3, the oil is forced through the pipeinto the cylinder 7. The .valve 58 being closed, 'the pressure is exerted piston v28, forcing the shaft 22 toward the left-hand the shaft 22 being slidably disposed inthe piston 28 (Fig. 2) so that the disk 23 contacts with the disk 12 and rotation from the shaft 2 is communicated to the shaft 22. With the parts in this 1 the shoes 7 7 Iare retracted from the springs 82. the rocking position, iange 78 by the tension of the The valve 58 being opened by of the rock-shaft 64, the pressure in inder 7 is relieved and the shaft 75 beingsiof the spring 82,

` right-hand 'of Fig. 2, so

fthe passage the clutch' and permits circulation ofthe 011 rocked overcoming the tenslon the shoes 77 contact with the'iiange v78 and the shaft 22 is slid to the that the disk 23 is pressure 8 stops multaneously retracted and at the same time the of the shoes 77 against the flange the rotation of Ithe parts.

With the valve in the position shown in Fig, 3 and thel pump 36 being in action, pressure is produced in the cylinder 7 causing the iston 28 to be. forced to the left handof ig. 2, and the consequent engagement of the clutch. Operation of the pedal 66 rocks the valve 49 90 ina clockwise direction, so that its diametral brought into alinementwith the pipe 35 and 51; This cuts off the pressure to through pipe 40, pipe 35, the diametral pasvalve'49, passage 51, oil age 44, y this the cylpassage 1s 1 arrangement the pump 36 may continue to workwlth the car standing still without pro?y ducing pressure on the cylinder 7. l

Having thus fully described my invention, what I claim as new and desire to secure by Letters ,Patent is:

1. A clutch comprlsing the 'combination of a driving shaft, a driven shaft slidably Y disposed adjacent the driving shaft and arranged to telescope thereover, abutting disks arranged on the driving and driven shafts respectively, a pressure cylinder arranged around the driven shaft, a piston in the cylinder arranged to move and means for producing pressure in the cylinder behindv the piston.

2. A clutch comprising the combination of'a driving shaft, -a driven shaft slidably disposed adjacent the driving shaft, ting disks arranged on the driving andv driven shafts respectively, a pressure cylinder arranged around one of the shafts, a piston in the cylinder arranged to force the disks' into contact, meansfor producing pressure in the cylinder behind-the piston, a casing disposed around| the disks and adjacent parts, grooved thrust plates on the .shaftsI andl balls,

o oved thrust plates. a

3. A clutch comprising the combination of a 'driving driven shaft, disks on the adjacent ends of the shafts, a piston provided with a sleeve fitted around the driven shaft', a cylinder arranged to receive the Igpiston, means'for provducing pressure in the cylinder, a spring pressed adjustable member on the cylinder arranged to be operated at a predetermined pressure to relieve pressure inthe cylinder, and means for controlling pressure inthe cylinder.

the slidable shaft l shaft, a slidably supported abuti 4. A clutch comprisingthe combination 4 of. a driving shaft, a slidably supported driven shaft, disks on the adjacent ends of the shafts, means for. forcing the disks into contact, a projecting member on the driven shaft, a rock shaft disposed adjacent projecting'membenshoes carried y the rock shaft and adapted-to contact with the projecting member and means for rocking the rock shaft when the pressureproducing means is inoperative.

In testimony whereof I have signed my name to this specification. Y

f' JOHN MACHO.

tothe 

